Fundamentals of Clinical and Scientific Research Design

Research Design Fundamentals

The study design is the strategy or plan used to answer a research question and serves as the foundation for the quality of clinical research. It represents the researcher's general plan to obtain answers or test hypotheses. The research design outlines the basic strategies adopted to generate accurate and interpretable results.

Approaches to Research

Quantitative Research

This approach uses data collection to test hypotheses based on numerical measurement and statistical analysis to establish patterns of behavior and test theories.

• Objectivity: Research should be as objective as possible. Observed phenomena should not be affected by the researcher's beliefs, fears, desires, or biases.
• Structure: These studies follow a predictable, structured pattern.

Qualitative Research

Sometimes called naturalistic, phenomenological, interpretative, or ethnographic research. It addresses problems that are not strictly defined, following a process based largely on inductive reasoning to explore and describe phenomena.

Research Techniques and Tools

• Quantitative: Focuses on objective factors with fixed, unalterable designs during the investigation.
• Qualitative: The researcher develops sensitivity, utilizing flexible designs that adapt as data is presented.

Scientific Research Purposes

Scientific research serves two primary purposes:

• Basic Research: To produce knowledge and theories.
• Applied Research: To solve practical problems.

Scientific research is a set of systematic, empirical processes applied to study a phenomenon. It is dynamic, changing, and evolving, manifesting in three forms: qualitative, quantitative, and mixed methods.

Core Concepts

Scientific research is essentially a rigorous, organized, and careful form of inquiry. According to Kerlinger, it is systematic, empirical, and critical. It aims to answer questions or hypotheses to increase knowledge about the unknown.

Common Myths About Research

• Myth A: "Research is extremely difficult and complicated."
• Myth B: "Research is not linked to the everyday world or reality."

Research is not inherently intricate or difficult. Anyone can conduct research correctly by applying the proper processes and tools. For example, an engineer building a structure must perform a soil investigation to project its construction accurately.

The Importance of Research

Progress is directly linked to the depth and frequency of research. The most successful companies globally are those that invest heavily in research, such as those in the pharmaceutical, telecommunications, technology, and robotics sectors.